TWI468737B - Layer upon layer of optical disk - Google Patents

Description

Gradation collecting disc

The invention relates to a collecting disc, in particular to a collecting disc having a stepped chassis.

Due to the rapid development of industry, the gradual depletion of fossil fuels and greenhouse gas emissions are increasingly receiving global concerns, and the stable supply of energy has become a major global issue. Among them, solar energy is a kind of rich, safe and zero-free renewable energy, and its energy generation process will not cause environmental pollution, nor will it consume other earth resources, nor cause problems such as the global warming effect. Therefore, it is an excellent source of energy for the Earth, which is currently lacking in resources. In particular, it is aimed at how to apply solar energy to the construction industry to provide healthier natural light illumination, while at the same time effectively saving energy for sustainable development.

At present, there are two ways to provide energy-saving lighting in the construction industry: one is to use solar energy conversion technology to provide electricity by photoelectric conversion, but its conversion efficiency and cost considerations are a big problem; the other is A natural light guiding system including a light concentrator and a light guiding device with an appropriate optical design is used to guide the sunlight into the room to increase the brightness of the room, thereby achieving the purpose of reducing the lighting power.

However, in the process of collecting light, transmitting light, and illuminating the natural light guiding system, the light energy must be lost. Therefore, how to increase the light concentration rate of the concentrator and increase the light compression ratio is a desire in the technical field. Solve the problem.

An object of the present invention is to provide a gradient type light collecting disc to increase The light concentration rate, as well as the light compression ratio, to effectively use the light from the surrounding environment.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

In order to achieve one or a part or all of the above or other objects, a gradient type light collecting disk according to an embodiment of the present invention includes at least a first annular lens, a second annular lens, a chassis and A circular light guiding unit. The first annular lens has a ring center position and has a first light incident surface and a first light exit surface. The first light-emitting surface faces the ring center, and the first light-incident surface is located on the opposite side of the first light-emitting surface. The second annular lens surrounds the outside of the first annular lens and is formed in a concentric annular arrangement with the first annular lens. The second annular lens has a second light-incident surface and a second light-emitting surface, the second light-emitting surface faces the first light-incident surface, and the second light-incident surface is located on the opposite side of the second light-emitting surface. The chassis is connected to the first annular lens, the second annular lens and the circular light guiding unit, and provides a first horizontal plane, a second horizontal plane lower than the first horizontal plane and a third lower than the second horizontal plane level. The first horizontal plane is connected to the first light exiting curved surface, the second horizontal plane is connected between the first light incident surface and the second light exiting curved surface, and the third horizontal plane is connected to the second light incident curved surface. The circular light guiding unit is disposed at a center of the inner side of the second annular lens, wherein the circular light guiding unit has a reverse tapered hollow portion and an outer curved surface, wherein the outer curved surface is connected to the first horizontal plane, the inverted cone The hollow portion has an inner side wall that is curved relative to the outer side.

In one embodiment, the circular light guiding unit has a slot, the slot is located below the inverted tapered hollow portion, and has a downwardly facing opening for the insertion of the optical fiber. In an embodiment, the circular light guiding unit further has a second inverted cone The hollow portion, the second inverted tapered hollow portion is disposed directly below the inverted tapered hollow portion and located directly above the slot.

In the above embodiment, each of the annular lenses includes a slanted reflecting surface at an angle of 45 degrees to a bottom plane of one of the chassis, and is adapted to reflect light in the ambient surroundings to advance toward the center of the ring. The first light-emitting surface of the first annular lens and the second light-emitting surface of the second annular lens may each be a concave spherical free-form surface. The outer curved surface of the circular light guiding unit, the first light incident curved surface of the first annular lens, and the second light incident curved surface of the second annular lens may each be a convex spherical free curved surface.

Compared with the existing collecting lens, in the embodiment of the present invention, the light collected by the annular lens of the outer ring enters the annular lens of the inner ring, and the light is similarly guided in the chassis because of the difference in the thickness of the matching chassis. The light source transmits light source, thereby reducing the number of light deflections between different annular lenses, and significantly improving the light leakage problem between different annular lenses. Thereby, it is also possible to effectively increase the light concentration ratio and increase the light utilization efficiency and the light compression ratio.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as upper, lower, left, right, front or rear, etc., are only used to refer to the directions of the accompanying drawings. Therefore, the directional terms are used for illustration only and are not intended to limit the invention.

Please refer to the first figure, which is a perspective view of a gradient type light collecting disc according to a first embodiment of the present invention. The gradient-type light collecting disk 10 includes a circular light guiding unit 11 at the center C, and a plurality of annular lenses 100, 200 for concentrating light in the environment to form a point source. Ring lens 100, 200 The radius of each of the ring lenses 100, 200 is centered on the same center C, and is arranged in a small to large direction according to the radius of the equal shape, thereby forming a gradual collecting light. Disc 10.

Referring to the second drawing, it is a schematic view of a section taken along the line C-A and C-B in the first figure. In the first embodiment, the cross section of the gradient light collecting disk 10 may include a section 111 of a circular light guiding unit, a section 100a of a first annular lens, a section 200a of a second annular lens, and a chassis. Section 12a.

Referring to the third figure, it is a schematic cross-sectional view taken along the line C-B in the first figure. The circular light guiding unit 11 has an outer curved surface 11a, and the first annular lens 100 surrounds the outer side of the circular light guiding unit 11. The surface of the first annular lens 100 includes a first light incident surface 110a, a first light exit curved surface 120a, and a first reflective surface 140a. The first light incident curved surface 110a is located outside the first annular lens 100 and faces away from the center C. The first light exiting curved surface 120a is opposite to the first light incident curved surface 110a and is located inside the first annular lens 100 and faces the ring core C. In this embodiment, the first light incident curved surface 110a is a convex surface, and the first light emitting curved surface 120a is a concave surface. The first reflecting surface 140a is connected to one end of the first light incident curved surface 110a and the top of the first annular lens 100. The first light incident surface 110a and the first light exit curved surface 120a may each be a spherical free curved surface.

The radius of the second annular lens 200 is greater than the radius of the first annular lens 100 and surrounds the periphery of the first annular lens 100. The surface of the second annular lens 200 includes a second light incident surface 210a, a second light exit curved surface 220a, and a second reflective surface 240a. The second light incident curved surface 210a is located outside the second annular lens 200 and faces away from the center C. The second light-emitting surface 220a is backed The second light incident surface 210a is located inside the second annular lens 200 and faces the ring core C. In this embodiment, the second light incident surface 210a is a convex surface. The second light exiting surface 220a is a concave surface. The second reflecting surface 240a is connected to one end of the second light incident curved surface 210a and the top of the second annular lens 200. The second light incident surface 210a and the second light exit curved surface 220a may each be a spherical free curved surface. Similarly, the third annular lens 300 has a shape similar to that of the second annular lens 300, and has a radius larger than the radius of the second annular lens 200 and surrounds the periphery of the second annular lens 200. The surface of the third annular lens 300 includes a third light incident surface 310a, a third light exit curved surface 320a, and a third reflective surface 340a.

In this embodiment, the reflecting surfaces 140a, 240a, and 340a are all inclined surfaces, and the angles θ between the reflecting surfaces 140a, 240a, and 340a and one of the bottom planes 12b of the chassis 12 are 45 degrees, which are suitable for reflecting light in the environment. Let it advance toward the center of the ring C.

The chassis 12 is coupled below the first annular lens 100, the second annular lens 200, and the third annular lens 300. It is worth mentioning that the thickness of the matching chassis 12 under the first light-emitting curved surface 120a, the second light-emitting curved surface 220a and the third light-emitting curved surface 320a are different. As shown in the third figure, the chassis 12 provides a first horizontal plane 121, a second horizontal plane 122 that is lower than the first horizontal plane 121, and a third horizontal plane 123 that is lower than the second horizontal plane 122. The first horizontal surface 121 is connected to the first light-emitting curved surface 120a, the second horizontal surface 122 is connected between the first light-incident curved surface 110a and the second light-emitting curved surface 220a, and the third horizontal surface 123 is connected to the second light-incident curved surface 210a. Between the third light exiting surfaces 320a.

In other words, for the same annular lens, the thickness of the chassis below the light-incident surface is smaller than the thickness of the chassis below the light-emitting surface. For example, for the first ring In the lens 100, the thickness T2 of the chassis below the first light incident curved surface 110a is smaller than the thickness T1 of the chassis below the first light emitting curved surface 120a. And so on, for each of the other annular lenses 200, 300, so that the closer to the first horizontal plane 121 of the toroid C, the greater the thickness of the corresponding chassis, so the position of the first horizontal plane 121 is higher. Farther away from the second horizontal plane 122 of the toroid C.

Referring to the fourth figure, it is a schematic cross-section and a trace of the light trace taken along the C-A extension line in the first figure. During the convergence of the light in the surrounding environment, the third reflecting surface 340a of the peripheral third annular lens 300 reflects the light L3 from above to the second light incident surface 210a. The light ray L3 incident on the second light incident curved surface 210a is refracted via the second light incident curved surface 210a, and proceeds to the second light exit curved surface 220a, and is refracted after the second annular lens 200 is refracted via the second light exit curved surface 220a. After passing to the first light incident surface 110a, it is directed to an axis passing through the toroid C. At this time, the second reflecting surface 240a also reflects the light L2 from above onto the first light incident curved surface 110a. The light ray L2 incident on the first light incident curved surface 110a is refracted through the first light incident curved surface 110a, and proceeds to the first light emitting curved surface 120a, and then refracted through the first light emitting curved surface 120a, so that the light ray L2 is incident parallel to a passing ring. On the axis of the heart C.

In an embodiment, the outer curved surface 11a of the circular light guiding unit 11 disposed at the center C is connected to the first horizontal surface 121, and the circular light guiding unit 11 has a reverse tapered hollow portion 11b. The inverted tapered hollow portion 11b has an inner side wall which forms a reverse tapered reflecting surface with respect to the outer curved surface 11a. The first reflecting surface 140a reflects the light L1 from above onto the outer curved surface 11a of the circular light collecting unit 11, and is refracted via the outer curved surface 11a, and proceeds to the light emitting curved surface 11d and is refracted via the light emitting curved surface 11d, so that the light L1 is made. Parallel incidence on the inner side wall of the inverted tapered hollow portion 11b, and then in the inverted cone The inner side wall of the hollow portion 11b is reflected and emitted downward into an element such as the optical fiber 30, and is introduced into the room via the optical fiber 30 as an application such as illumination. In an embodiment, the circular light guiding unit 11 has a slot 11e which is located below the inverted tapered hollow portion 11c. The slot 11e has a downwardly facing opening portion 11g for the optical fiber 30 to be inserted therein.

The chassis 12 has the function of a light transmission channel. Since the first horizontal plane 121 of the chassis 12 is higher than the second horizontal plane 122, the light ray L3 is directly transmitted to the center C of the inside of the chassis 12 after being incident parallel to the first light incident surface 110a through the second horizontal surface 122. At the same time, it is not exposed to other conductive media during conduction, thus reducing the chance of loss of light energy due to multiple refractions. Similarly, once the light ray L2 is conducted to the outer curved surface 11a of the circular light guiding unit 11, it is also directly conducted from the inside of the chassis 12 to the center C.

In addition, if a fourth annular lens (not shown) is disposed on the periphery of the third annular lens 300, the fourth annular lens guides the light incident on the fourth reflecting surface (not shown) into the third input. The light curved surface 310a is refracted to the third light exit curved surface 320a, and further refracts light rays out of the third annular lens 300, so that the light rays are incident in parallel to the second light incident curved surface 210a, and the gradient type light collecting disk 10 can be collected more. Multiple rays.

By the arrangement design of the first annular lens 100, the second annular lens 200 and the third annular lens 300 and the structural design of the chassis 12, the light in the surrounding environment can be sequentially passed by the third annular lens 300 of the outermost layer. The second annular lens 200 gradually converges even in the innermost first annular lens 100, and further converges to the toroid C, so that the gradation-type light collecting disk 10 can converge the light from the surrounding environment into a point. The purpose of the light source is to increase the compression ratio of the light, reduce the number of fibers used, and increase the profit of the light. Use efficiency.

Referring to FIG. 5, it is a schematic diagram of a circular light guiding unit of a gradient type light collecting disk according to a second embodiment of the present invention. The gradient type light collecting disk 20 of the present embodiment is different from the gradient type light collecting disk 10 of the first embodiment in that the circular light guiding unit 21 has a slot 21e and two stacked upper and lower layers. Conical hollow portions 21c and 21f. The slot 21e is located below the inverted tapered hollow portions 21c and 21f. The inverted tapered hollow portion 21f is disposed directly below the inverted tapered hollow portion 21c and is located directly above the slot 21e.

The sixth drawing is a partial schematic view of the gradient type light collecting disk 20 of the second embodiment of the present invention. The seventh drawing is a side view showing a step of combining the gradient collecting disk 10 or 20 of the embodiment of the present invention with a light guiding line of an optical fiber or the like. The detailed structure description is as described above.

As shown in the eighth figure, it is a schematic view of applying the embodiment of the present invention to the building H. The gradation type collecting discs 10 and 20 can be directly combined with different application fields for building materials, such as laying on the roof, eaves, outer wall and surrounding space of the building H, and guiding the light pipes through the optical fiber 30 or the like. It is configured to direct light into the room and is used as an intelligent lighting option in conjunction with the indoor lighting fixture 40, or in a solar tracking system to enhance the light energy required to collect solar cells.

Referring to Figures 9A and IXB, the concentrating light collecting disk of the present invention having a chassis is compared with the light collecting efficiency (%) of a conventional chassisless ring concentrator. The larger the horizontal axis number of Figure 9A represents the annular lens of the outer ring, and the ninth A shows that the light collected by the annular lens of the outer ring enters the annular lens of the inner ring because of the difference in the thickness of the matching chassis. The light is transmitted in the chassis in a manner similar to a light guide plate, thereby reducing The number of times of light deflection between different ring lenses can significantly improve the light leakage problem between different ring lenses. Comparing with each single-turn annular lens, although the light collecting efficiency of the embodiment of the present invention is gradually degraded as the number of turns of the annular lens increases and the distance between the tapered hollow portions increases, the light collecting efficiency decreases. The phenomenon tends to be flat after the sixth ring, and still has an excellent collection efficiency of 31% to the outermost ring (seventh ring). Under the design structure that can effectively collect light in each single turn, the invention can increase the collection area of the light collection due to the increase of the area of the light collecting disk after surrounding the annular lens of more circles, so the ninth B picture shows The overall average collection efficiency still maintains quite good results. In contrast, after the chassisless ring concentrator is a single 7th ring or wraps around the 7th ring, its collection efficiency is reduced to near zero.

In summary, the lens curved surface design and the arrangement design of the gradient-type light collecting disk of the embodiment of the invention can increase the light concentration rate of the light, and the disk-shaped module structure can improve the light collecting efficiency of the light. Moreover, it can increase the compression ratio of light and its utilization rate, and can be used as an industry for indoor lighting, solar energy gathering systems, etc. to achieve efficient use of energy in the environment to effectively save energy and reduce carbon.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

10, 20‧‧‧ Gradation collecting disc

100, 200, 300‧‧ ‧ ring lens

11, 21‧‧‧Circular light guide unit

111‧‧‧Profile of the circular light guide unit

11a‧‧‧Outer surface

Section of the 100a, 200a‧‧ ‧ ring lens

12‧‧‧Chassis

12a‧‧‧Some section of the chassis

110a, 210a, 310a‧‧‧ light surface

120a, 220a, 320a‧‧‧ light surface

140a, 240a, 340a‧‧ ‧ reflective surface

121, 122, 123‧‧‧ horizontal plane

11b, 11c, 21c, 21f‧‧‧ inverted cone hollow

11d‧‧‧light surface

11e, 21e‧‧ slots

11g‧‧‧ openings

30‧‧‧Fiber

40‧‧‧Interior lighting

C‧‧‧环心

H‧‧‧Buildings

T1, T2‧‧‧ chassis thickness

L1, L2, L3‧‧‧ rays

The first figure is a perspective view of a gradient type light collecting disk according to a first embodiment of the present invention.

The second figure is a schematic view of a portion cut along the C-A and C-B extension lines in the first figure.

The third figure is a schematic cross-sectional view taken along the line C-B in the first figure.

The fourth figure is a schematic view of the cross section and the light trace taken along the C-A extension line in the first figure.

The fifth and sixth figures are partial structural views of the step-by-step type light collecting disk of the second embodiment.

Figure 7 is a side elevational view of a gradient type light collecting disk according to an embodiment of the present invention.

The eighth figure is a schematic view of an embodiment of the present invention applied to a building.

Figures 9A and 9B are comparison diagrams of the collection efficiency of the embodiment of the present invention and the conventional structure.

10‧‧‧ Gradient collecting disc

100, 200, 300‧‧ ‧ ring lens

11‧‧‧Circular light guide unit

11a‧‧‧Outer surface

12‧‧‧Chassis

110a, 210a, 310a‧‧‧ light surface

120a, 220a, 320a‧‧‧ light surface

140a, 240a, 340a‧‧ ‧ reflective surface

121, 122, 123‧‧‧ horizontal plane

11c‧‧‧ inverted cone hollow

T1, T2‧‧‧ chassis thickness

Claims (7)

A gradient-type light collecting disk comprising a plurality of annular lenses, the plurality of annular lenses comprising: a first annular lens having a ring center position and having a first light incident surface and a first light output a surface of the first light-emitting surface facing the center of the circle, the first light-incident surface is located on the opposite side of the first light-emitting surface; a second annular lens surrounds the outer side of the first ring lens, and The first annular lens is formed in a concentric annular array, wherein the second annular lens has a second light incident surface and a second light exiting surface, the second light emitting surface facing the first light incident surface, the second The light incident surface is located on the opposite side of the second light exiting surface; a chassis is connected to the first annular lens, the second annular lens and the circular light guiding unit, and provides a first horizontal surface, a second horizontal plane lower than the first horizontal plane and a third horizontal plane lower than the second horizontal plane, wherein the first horizontal plane is connected to the first light exiting curved surface, and the second horizontal plane is connected to the first light incident surface The second Between the light curved surfaces, and the third horizontal plane is connected to the second light incident curved surface; and a circular light guiding unit disposed at a center of the inner side of the second annular lens, wherein the circular light guiding unit is The utility model has a reverse tapered hollow portion and an outer curved surface, wherein the outer curved surface is connected to the first horizontal surface, and the inverted tapered hollow portion has an inner side wall, the inner side wall being opposite to the outer curved surface. The gradient type light collecting disk of claim 1, wherein the circular light guiding unit has a slot, the slot is located below the inverted tapered hollow portion, and has a downward facing Opening. The gradient type light collecting disk according to claim 2, wherein the circular guide The light unit has a second inverted tapered hollow portion disposed directly below the inverted tapered hollow portion and located directly above the slot. The gradient collecting disk of claim 1, wherein each of the annular lenses comprises a slanted reflecting surface adapted to reflect light in a surrounding environment toward the ring The direction of the heart advances. The gradient collecting disk of claim 4, wherein the reflecting surface of each of the annular lenses forms an angle of 45 degrees with a bottom plane of the chassis. The gradient collecting disk of the fourth aspect of the invention, wherein the first light exiting surface of the first annular lens and the second light emitting surface of the second annular lens are concave balls Freeform surface. The gradient collecting disk of the sixth aspect of the invention, wherein the outer curved surface of the circular light guiding unit, the first light incident curved surface of the first annular lens, and the second annular lens The second light-incident curved surface is a convex spherical free-form surface.